Finding the Fourth Proportional to 42,006.34, 63,022.88 and 12,424.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,006.34 : 63,022.88 = 12,424.34 : x
2. Step 2: Convert to fraction form
   42,006.34/63,022.88 = 12,424.34/x
3. Step 3: Cross multiply
   42,006.34x = 63,022.88 × 12,424.34
4. Step 4: Simplify right side
   42,006.34x = 783,017,688.90
5. Step 5: Solve for x
   x = 783,017,688.90/42,006.34
6. Step 6: Final answer
   x = 18,640.46